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Home >> Mazda >> 2017 >> MX-5 Miata RF Club, Automatic Trans >> Repair and Diagnosis >> Body & Frame >> Door Locks >> On-Board Diagnostic - Retractable Fastback Control Module >> DTC B1DA0-79; Exceeds Maximum Number Of Pulse Counts For Top Lock Motor >> Diagnostic Procedure

Diagnostic Procedure

Step Inspection Action
1 VERIFY OTHER RETRACTABLE FASTBACK CONTROL MODULE DTCs
 Yes Replace the retractable fastback control module, then go to Step 4.
(See RETRACTABLE FASTBACK CONTROL MODULE REMOVAL/INSTALLATION ).
No Go to the next step.
2 IF MALFUNCTION CAUSE IS POOR TOP LOCK MOTOR INSTALLATION
  • Verify that the top lock motor is installed to the correct position.
  • Is the top lock motor installed to the correct position?
 Yes Go to the next step.
No Install the top lock motor to the correct position, then go to Step 4.
(See TOP LOCK MOTOR REMOVAL/INSTALLATION ).
3 TOP LOCK MOTOR
 Yes Go to the next step.
No Replace the top lock motor, then go to the next step.
(See TOP LOCK MOTOR REMOVAL/INSTALLATION ).
4 VERIFY THAT REPAIRS HAVE BEEN COMPLETED
 Yes Repeat the inspection from Step 1.
  • If the malfunction recurs, replace the retractable fastback control module.

(See RETRACTABLE FASTBACK CONTROL MODULE REMOVAL/INSTALLATION ).
Go to the next step.
No Go to the next step.
5 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
 Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [RETRACTABLE FASTBACK CONTROL MODULE] ).
No DTC troubleshooting completed.
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